Global Patent Index - EP 0123562 A1

EP 0123562 A1 19841031 - Vehicule route finding system.

Title (en)

Vehicule route finding system.

Title (de)

Wegbestimmungssystem für Fahrzeuge.

Title (fr)

Système de détermination de route pour véhicules.

Publication

EP 0123562 A1 19841031 (EN)

Application

EP 84302814 A 19840426

Priority

GB 8311303 A 19830426

Abstract (en)

A vehicle route finding system whereby a vehicle borne receiver (10) picks up signals from a radio navigation system (14, 15, 16, 23), such as the Loran-C system, and transmits data related to its location to a central station, via the data channel on a radiotelephone link. At the central station a computer (16) determines the vehicle's position from the Loran data and, knowing its desired destination, retransmits routing information back to the driver. True position values additionally transmitted from the vehicle are used to compensate for propagation errors.

IPC 1-7

G01S 5/02

IPC 8 full level

G01C 21/26 (2006.01); G01S 5/00 (2006.01); G01S 5/02 (2006.01); G08G 1/0968 (2006.01)

CPC (source: EP)

G01C 21/26 (2013.01); G01S 5/0009 (2013.01); G08G 1/096811 (2013.01); G08G 1/096872 (2013.01)

Citation (search report)

  • [Y] FR 2414733 A1 19790810 - WEISSER W [DE]
  • [A] US 3750166 A 19730731 - DEARTH J
  • [AD] US 3766552 A 19731016 - HAJDUK M
  • [AD] US 4106022 A 19780808 - LAST JAMES DAVID
  • [Y] PROCEEDINGS OF THE NATIONAL ELECTRONICS CONFERENCE, vol. 34, 1980, pages 359-362, Oakbrook, Illinois, USA; D.J. BERRY et al.: "Electronic correction systems for LORAN-C signals reception (ECSLSR)"
  • [A] WESCON TECHNICAL PAPERS, vol. 20, part 20, paper 33/3, pages 1-7 of part 33/3, North Hollywood, USA; J. VAN DEWERKER: "Loran vehicle location systems"
  • [A] IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. VT-26, no. 2, May 1977, pages 187-191, New York, USA; D.J. SYMES: "Multiuser area-coverage automatic vehicle monitoring program"
  • [A] PATENTS ABSTRACTS OF JAPAN, vol. 6, no. 156(P-135)(1034), 17th August 1982; & JP - A - 57 73616 (FURUNO DENKI K.K.) 08-05-1982

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0123562 A1 19841031; EP 0123562 B1 19900718; AT E54760 T1 19900815; DE 3482726 D1 19900823; GB 8311303 D0 19830602

DOCDB simple family (application)

EP 84302814 A 19840426; AT 84302814 T 19840426; DE 3482726 T 19840426; GB 8311303 A 19830426